Yes...and No...: There are many sexually transmitted infections: Gonorrhea, Chlamydia, Syphilis, Herpes, HIV, Hepatitis, Trichomoniasis, Human Papiloma Virus... There is some evidence that daily Doxycycline will help prevent the first 3: Gonorrhea,Chlamydia and Syphilis but not the rest. Changing your lifestyle and using condoms will help with the others. Best wishes!
Answered 5/22/2016
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